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Is Your Cat at Risk for Heartworms?

Posted Tue, Aug 07, 2007, 10:00 am PDT

You're probably familiar with the need for heartworm prevention in dogs, but did you know cats need protection as well?

Heartworm infection occurs when a mosquito that's carrying heartworm larvae bites the cat. The heartworm larvae initially travel through the cat's system toward the lungs. And the worms don't have to mature to start causing serious damage to the cat's respiratory system. What may appear to be asthma or bronchitis may actually be part of heartworm-associated respiratory disease (HARD).

Signs of heartworm infection can be similar to other diseases, so it's easy to misdiagnose. These can include coughing, anorexia, weight loss, lethargy, open-mouth breathing, rapid breathing,  and difficulty breathing.

While outdoor cats are most at risk, there is also risk for cats kept strictly indoors. And cats who live in mosquito-dense areas are at much higher risk. Cats of any age are vulnerable.

There is no approved treatment in the U.S. for heartworm infection, but, luckily, safe and easy heartworm prevention is available. Currently, there are four different products to choose from.

Talk to your vet about your cat's risk of heartworm infection and which heartworm prevention product would be most appropriate.

And check out this link to learn more about feline heartworm disease: www.heartwormsociety.org

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7 Comments

  • 1. Heidi Louise Lesser - 10:12AM on 08/07/07

    I agree that every cat needs heartworm prevention - especially ones that live in the south US like I do - where mosquitos are everywhere! I use Advantage Multi for cats. This product is a bit pricey (about $100 for a 6-pack) but it is worth it. This works like Frontline or Advantix in that you apply directly on the back of the neck. But, unlike these other products, Advantage Multi prevents heartworms and earmites, as well as fleas and ticks (not to mention round worms and hookworms, too). I strongly recommend Advantage Multi. Even if your cat NEVER goes outside, it is important to remember that he/she can still get fleas, heartworms, etc. - even if you don't have any other pets. I used to be a cat nurse at a hospital and I have seen many cases of this very issue that is being discussed here. Let's keep our felines protected!

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  • 2. lynn d - 2:59PM on 08/07/07

    Thank you Heidi, I have an inside kitty and thought she would be fine..no worries. Now, I know better.

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  • 3. ylover - 11:33AM on 08/08/07

    my cats are indoor/outdoor cats so from a scale from 1 to 10 how bad is the risk???!!!

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  • 4. sunlitdaygirl - 9:35AM on 08/09/07

    Sorry, this is just a big scam from a pharmaceutical company to play upon and exploit for corporate profit the fears of pet owners with cats indoors. I've researched this for years as I live in a desert state where it used to be years ago vets simply thought giving a dog heartworm medicine was ludicrous because the incidence of the disease was almost nil and was only seen in dogs transported into the state from more wet climates. Now they try and push it like it's a real threat in a state that has an incredibly low population of misquitoes! When it comes to cats I can see cats that go outside in a more humid state (perhaps) but the incidence of indoor cats getting this is just plain pulling the wool over people's eyes. One has to ask why hasn't this come up before in the disease spectrum for cats? Probably because it doesn't really exist. I've researched marketing industries pushing vets (and doctors for that matter) to prescribe more and more unnecessary pills and procedures for animals. Wake up, folks, and smell the coffee. They want your money and they'll scare you to death to get it.

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  • 5. mistiggress - 9:33PM on 08/17/07

    I don't know about everybody else but I will keep using the heartworm medicine for my cats regardless of what sunlitdaygirl thinks. This spring one of my cats, Daytona, was diagnosed with a rare type of cancer in her ear canal and saliva glands. They told me she had about six months to live so I came home and prepared myself to lose her. I only got to spend another 7 weeks with her before I had no choice but to put her to sleep. I was so devasted by the experience of having a cat with a disease I couldn't fix that I immediately went out and got the heartworm medicine for the others. I'd rather my other cats be safe than taking a chance on them getting sick now. I do not want to ever be in the position where the vet is telling me I could have prevented one of my other cats from dying. Losing them is just to heartbreaking. Safe and healthy is better than dying or dead anyday!!!

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  • 6. Laura H - 10:07AM on 05/03/08

    These cats have a higher normal temperature than cats with more hair and since they have little or none mosquitoes are attracted to them. I had two Cornish Rexes that tested positive for heartworms!!!!! I also had a Persian at that time and he was fine. So BEWARE!!! Mosquitoes can come into your home thought the smallest crack and can also enter via your plumbing, sinks and or tub drains. I know because I had some little things in my sink that looked like little black strings. I noticed them moving and put them in a bag and went to the vet, they were mosquito larva, in my house, coming in through the plumbing!!!!

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  • 7. Morven - 2:07PM on 06/03/08

    " One has to ask why hasn't this come up before in the disease spectrum for cats? Probably because it doesn't really exist." It has come up before. Ever since I got my cats 12yrs ago my vet always recommended heartworm medication, even though they have always been indoors. Living in the South, I've seen plenty of mosquitoes inside my home.

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